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Subject: Re: What is the average nodes per second for minimax?

Author: Tom Kerrigan

Date: 16:22:07 06/23/00

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On June 22, 2000 at 17:28:07, leonid wrote:

>On June 22, 2000 at 13:27:03, Tom Kerrigan wrote:
>
>>On June 21, 2000 at 21:18:07, leonid wrote:
>>
>>>On June 21, 2000 at 19:03:40, Tom Kerrigan wrote:
>>>
>>>>On June 21, 2000 at 17:07:06, leonid wrote:
>>>>
>>>>>On June 21, 2000 at 13:38:41, Tom Kerrigan wrote:
>>>>>
>>>>>>If you think that material-only evaluation programs are good for anything,
>>>>>>you're sadly mistaken.
>>>>>
>>>>>
>>>>>I said only that material evaluation is evaluation about everything in principe.
>>>>>About tactics... or just say it. I agree that in actual state of hardware it is
>>>>>not enough have only material evaluation, but its importance  will grow as
>>>>>rapidly as hardware capacity will improve. Very soon program that have in its
>>>>
>>>>Only evaluating material has zero importance. Why would you do it when you can
>>>>evaluate material AND positional terms with no penalty? Besides, material is
>>>>just a rule of thumb, just like any positional term. Thinking that you can make
>>>>a good program by only considering material is absurd, no matter how fast your
>>>>computer is.
>>>>-Tom
>>>
>>>Do we speak about my program or about general idea? If we speak about my program
>>>it is not that interesting, since we will talk only about one program in
>>>particular. When we speak about general idea, yes, material echange can say
>>>everything. Only through the material echange you can find mate or draw. By the
>>>same mean you can find all other move in the game, name it positional, tactical
>>>or otherwise. We can talk how much computer power we need for the best program
>>>right now to find this or other kind of move, but this is something else. Idea
>>>is simple - material echange do everything and everywhere. In chess game logic
>>>is enough to see everything in it from beginning up to the end.
>>
>>No, you're not listening. "Material exchange" (why can't you call it
>>material-only search or something?) is not the only way to find mates or draws.
>>In fact, you don't need to know a damn thing about material to find mates or
>>draws. That's my point. As soon as you start evaluating material, why wouldn't
>>you also evaluate e.g. doubled pawns at the same time?
>
>
>Two times tried to respond on the question of doubled pawns but lost two times
>my message. I hope now it will work.
>
>Evaluation of doubled pawns should be regarded (just as example) as two stage
>search.

What's the point of doing the search in 2 stages? Why not do it in 1? Everybody
in the entire world except you does a "1 stage search."

There are a number of things that you can cut into 2 parts, but it doesn't mean
you should cut them.

-Tom



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